Good work Greg and Mike!
Whilst we are on sounder shots, here is one I marked off Noosa the other day. We had pulled 3 off that spot in the morning, trolled away looking for more, came back, marked that one at 38m and hooked him next drift on a livey, or one of his mates as I marked two on the drift. That is typically how they mark up on the troll on a Furuno. On the drift the arches will be elongated.